chemistry

Tralkoxydim

Tralkoxydim is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tralkoxydim rather than just read about it. In short: Tralkoxydim is a herbicidal chemical used in Australia and Canada postemergently to control annual ryegrass, wild oats, barnyard grass, foxtail and persian darnel in wheat, barley, rye, triticale and fodder, though it has no effect on broadleaf weeds. It was banned in the EU in 2019.

Key takeaways

Tralkoxydim belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tralkoxydim to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tralkoxydim from memory before moving on to harder problems.

Reference excerpt

Tralkoxydim is a herbicidal chemical used in Australia and Canada postemergently to control annual ryegrass, wild oats, barnyard grass, foxtail and persian darnel in wheat, barley, rye, triticale and fodder, though it has no effect on broadleaf weeds. It was banned in the EU in 2019. Tralkoxydim came out of Dow Agrosciences's patent in Canada circa 2009. It was first registered in Australia circa 1990.

Mechanism of action Tralkoxydim's HRAC classification is Group A (Australia and global) or Group 1 (numeric). Group A herbicides inhibit acetyl-CoA carboxylase (ACCase). Tralkoxydim is absorbed by the weeds' leaves, thence moved through phloem to growing plantmatter where it inhibits the enzyme ACCase, which is needed for fatty acid synthesis. Hence tralkoxydim stops cell division and damages cell membranes, stopping the weed's growth nearly immediately. Weeds affected by tralkoxydim show symptoms after 7 to 10 days, with purpling and yellowing shoots, and necrosis, and after 3 to 4 weeks, death. Resistance has developed in some weeds in Western Australia, in about 10% of sampled wild oat populations.

Application Tralkoxydim is rainfast after 30 minutes or an hour. It is often supposed to be used with an adjuvant, at perhaps 0.5-1% of spray volume, and one such adjuvant is 50% mineral oil and 40% mixed surfactants. Crop injury can occur to non-tilled barley if temperatures fall below 40°F (4°C) within a couple of days before or after application, or if the crops are already stressed because of heat, drought or other reasons. Tralkoxydim can be applied via ground equipment, at 300 to 500 grams per hectare (0.27 to 0.45 lb per acre) in a spray volume of 50 to 150 litres of water per hectare (5 to 16 gallons per acre); or by aerial application at 20 to 30 L/Ha (2.1 to 3.2 gal/Ha). Tralkoxydim has been sold under the tradenames "Achieve", (Crop Care), Bison, (Adama), "Traction", (Tangyun), and "Tralkoxydim" (Apparent, 4Farmers, Nufarm, Smart).

Safety Tralkoxydim's acceptable daily intake is set by the EU at 0.005 mg per kg bodyweight per day, and the EU marks it with the GHS hazard statement No 351, "Suspected of causing cancer", though this statement is absent in safety data sheets from Canada or Australia.

Ecological information Tralkoxydim is not toxic to birds or bees. It may be toxic to aquatic life including algae (LC50 >5.1 mg/L), bluegill (LC50 >6.1 mg/L), and rainbow trout (LC50 >7.2 mg/L). Its average field half-life is about 2 to 13 days in aerobic conditions, but the water and soil persistence is high. It has low bioacculumative potential, and medium mobility in soil.

References

External links Tralkoxydim in the Pesticide Properties DataBase (PPDB)

Illustrations

Worked examples

Example 1 — a first encounter with Tralkoxydim

Start with the simplest possible case. Write down what Tralkoxydim claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tralkoxydim before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tralkoxydim ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tralkoxydim

In research: Tralkoxydim appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tralkoxydim in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tralkoxydim is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cyclic ketones, Cyclohexyl compounds, DIM herbicides, so understanding it makes those chapters shorter.
In everyday life: Look for Tralkoxydim outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tralkoxydim in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tralkoxydim means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tralkoxydim out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tralkoxydim in simple terms?

Why does Tralkoxydim matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tralkoxydim?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tralkoxydim.